33 Homogeneity

Make objects interacting with a given object of the same material (or material with identical properties).
  • Make the container out of the same material as the contents, to reduce chemical reactions.
  • Make a diamond cutting tool out of diamonds.
TRIZ principe 33


Is this principle frequently used?

This principle is rarely used with 31 instances in the matrix.

This principle is proposed to solve the following contradictions:

Click on a contradiction to explore it

5/30 9/13 11/13 11/31 12/13 13/9 15/30 16/30 17/30 23/30 23/32 24/37 26/29 26/30 28/31 29/5 30/5 30/15 30/16 30/17 30/23 30/26 30/28 30/38 31/11 31/15 31/28 32/23 37/24 38/24 38/30


The colour indicates the ranking of the proposed principle to solve the contradiction: 1st, 2nd, 3rd, 4th.
This ranking reflects the frequency of occurrence of the principle in the analysed patents for this type of contradiction.
When a principle appears in first position, it means that it is statistically the most used in the patents studied for this type of problem.